Make sure you have the latest Grid Tool (hotfix 987). I'm guessing that the Grid Tool is loaded, but is from an "older version" of AC (i.e. a version prior to the hotfix).
Go to Options > Add-On Manager and select the Grid Tool (if it is there) -- see what it says under "Add-On Info". If this is the problem, just download the latest from the Goodies site.
MacBook Pro Apple M2 Max, 96 GB of RAM
AC27 US (5003) on Mac OS Ventura 13.6.2
Started on AC4.0 in 91/92/93; full-time user since AC8.1 in 2004